Slug multilangue site not works

HI people, i develop a website for documentation. He is multilangue, for each page I have two files :


For a better organisation of the links in the documentation. I have placed identical slugs on the fr and en files but the slugs don’t work if I make a relative link with [text](../slug) which refers to [text](/pages/folder/pagename) slug doesn’t work.

Does anyone have any explanation for my problem? Thank you in advance